Type-writing machine.



EATENTED OUT. 16, 1906.

A. W. HEWITT.

TYPE WRITING MACHINE. APPLIOATION FILED mm. 1905.

3 SHEETS-SHEET 1 WWW 3 ,12,

PATENTED OUT. 16, 1906.

A. W. HEWITT. TYPE WRITING MACHINE.

APPLICATION FILED NOV.1, 1905- 3 SHEETS-SHEET 2 awe/MW PATENTED OCT; 16, 1906.

A. W. HEWITT. TYPE WRITING MACHINE. APPLICATION FILED N'0V.1, 1905.

3 SHEETS-SHEET 3 V T D T TES PATENT OFFICE. c

. ALLIN w. HEWITT, or BOGOTA, NEW QJERSEYQASSIGNOR. To UNoERwooo TYPEWRITER COMPANY, OF NEW YORK, N. Y.,,A CORPORATIOL L ()1 ,NEW JERSEY.

To all whom it mcq concern:

Be it knownthat I, ALLIN W. HEwITT, ,a citizen ofthe United States, residing 1n Bogota, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specifica- I made one following another.

axle.

One of the main objects of the invention is to simplify the means fordetermining mechanically how far back to rotate the platen for the insertion of a fresh bill in connection with the same record-sheet.

Another object is to enable any desired.

depth of margin to be secured at the top of the record-sheet regardless of the depth or extent of the other paper.

In the accompanying drawings, Figure 1 is a front elevation, partly in section, of a platen-rotating head adapted attached to the projecting end of the usual platen- Fig. 2 is a side elevationillustrating one form of clutch which is used between the platen and wheel or member which is seen upon said head. Fig. 3 is a view looking at the left-hand end of the parts seen at Fi 1. Fig. l is a view, partly in section, loo ring toward the right-hand. end of the head seen at Fig. 1. Fig. is a plan of the carriage of the well-known Underwood type-writing machine, showing myimprovements applied thereto. Fig. 6 illustrates in perspective the parts seen at Fig. 1. Fig. 7 is a sectional elevation showing the parts which. are rigid with the hand-wheel seen at Fig. 1.

ln said machine the types strike upon the front side of a cylindrical platen l, which is mounted for revolution by. means of an axle 2 in the ends 3 of aplatewframe 4 and is provided with the usual line-spacing devices, including a ratchet-wheel 5 and lever 6 for operating the same. Upon the end of the axle which projects. from the end of the platen-frame l secure, by means of a setscrew 'i, a head, illustrated 1n detail at Eh.

Specification'of Letters Patent.

Application filed Novembr 1,1905. seen No. 285,435;

printed matter upon the bill or,

TYPE-WRITING MAOHiN E.

Patented Oct. 16, 1900 ,1 and comprising a hand-wheel 8, which is fixed by a pin 9 upon the outer end of a shaft 10,.the inner end where-of fits over the plate axle and contains the screw '7, so that t e hand-wheel is rigid-withthe platen-axle and may rotatethe platen either forwardly or backwardly.

- A wheel 11 is mounted to {rotate f geely I upon the shaft 10, being confined. between fa shoulder 12, fofined on the latter, and a eol-' lar 13, fixed upon said shaft 10. 11 is used Said wheel rinoi ally when the platen is rotated, bac ward y for the insertion ofa.

11 is forced-to rotate therewith, and when the wheel 1 l is rotated forwardly it is capable, through the pawl and ratchet, of rot-at lug tli e platen. The pawl, which is pressed into the teeth by a spring 17, is in the form of a segment which. lies in an annular recess 18, formed in a cup 19, having a hub 20 fitting over the collar and secured thereto' by the pin 15: I A pin 21 fits in a hole 22, formedin a segment 23, which occupies about 'onehalf of said recess and serves to engage the rear end of the pawl, which is sloping at 2-1- in such a manner as to tend toforcethe head 61 the pawl into" the ratchet-teeth, said pawl by reason of its segmental. or bowlorm having a rocking motion at about the portion 25 of the rim of the cup 19. By a movement of the segment 23 in the opposite direct-ion, so

that it engages the head of the pawl, the.

latter is caused to slip freely over the teeth, as indicated in dotted lines at Fig. Other forms of pawl-and-ralchet mechanism or other kinds of clutches may he used between the revoluble member or wheel 11 and the platen. lo said revoluble member 11 l fix rigidly a stop 26 for engaging an arm 37 to arrest backward rotation of the platen, said arm projecting from the end 3 of the platters i frame in front of the wheel 11. "Said stop 26 projects from a disk '28, which is attached by screws 29 to the inner face of the wheel 11 and carries the pin 21 of the pawl-andratc'het mechanism.

Sometimes the bill to be written contains only a single item and sometimes very many items, so that the platen may be rotated through one or more revolutions by the linespacing mechanism 6 during the W1 iting of the bill; but I have provided means whereby the platen may be rotated backwardly only a predetermined distance regardless of the position of the platen when such backward rotationbegins. To this end I provide upon 1 the pin 11 a sto i 30, which engages the under side of the stationary arm 27, thereby to prevent the wheel 11'from rotating forwardly with the platen, so that said wheel is always stationary during. the forward rotation of the platen and when rotated backwardly can turn only through the are, which is predeter mined by the relative positions of the stops 26 arid upon said wheel. The stop 30 is formed which is revoluble relatively to the wheel;

' and the latter is provided with a rack 32,

consisting of a series of ndtches curved around the platen-axis. A'tooth 33, carried by the disk 31, mayengage any of said notches and hold the stop 26 in any desired relation to the stop 30, so as to regulate the extent of the backward rotation of the platen. In order to facilitate rotative ad- 3 5 justment of the disk 31, said teeth 33 is carmay be their rotated independently of the wheel 11, and the handle 38- may be moved to release the spring 34, so that the teeth 33 thereon may spring into engagement with another notch 32. In operation the wheel 11 is turned backwardly until the stop 26 strikes upon the top of the arm 27. Then e finger-piece 38 is moved to release the teeth 33, whereupon the disk 31 is rotated forwardly until the stop 30 strikes the under side of said arm 27. Then a bill is inserted at the back of the platen in the usual manner. T hen the pinion is-retated forwardly by means of the wheel 11 until the first writing-line on the bill is brought to the printingpoint. During such rotation the stop 30 remains stationary against the. arm 27. Then the handle 38 is moved to lock the disk 31 to the wheel 11, so that the distance separating the stops 30-and 26 corresponds to the depth 'of the, ill-headthat is, to the extent of the printed matter on the bill-head. The writing of the bill may now proceed'line by line,

thelong record-sheet and the carbon hav ng upon a disk 31,

completed, it is withdrawn from the machine *without disturbing the carbon and record sheets. The platen is then rotated backwardly by means of the hand-wheel 8, and

the clutch mechanism automatically locks the wheel 11 to the shaft 10, so that the wheel revolves backwardly with the platen until both are arrested by the contact of the stop 26 with the top of the arm 27. Then a new bill is inserted and the platen rotated forwardly by the finger-wheel 8 until the first line on the bill reaches the printingpoint. In this manner the carbon copies of successive hills are caused to follow one an.- other upon the same record-sheet. The extent of the backward rotation of the platen "is determined mechanically, while the extent of the subsequent forward rotation 18 readily determined by means ofthe usual front scale provided upon said Underwood machine,

so that the operator is not obliged to make any arithmetical calculations and is enabled to handle hills with expedition.

It is'sometimes desired 'to regulate the depth of margin at the top of the-recordsheet, especially when there is considerable the wheel 11, the bill at this time being iii position for writing the first line thereon. Before writing, however, the platen is turned backwardly until the index 40 registers with the arm 27,v whereupon the carbon and record sheets are introduced between the bill and the platen, the leading edge of the bill being then somewhat in advance of the diggading edge of the record-sheet. Then the platen is rotated forwardly until the bill is in position for the first line of writing, which line will fall upon the record-sheet nearer the top thereof than will be the case on the bill. The index 10 is adjustable, so as to secure different depth of margin upon the recordsheet as may be desired by difierent uses, said index being for this purpose detachably connected by a'thumb-screw 41' to the disk 31, the latter having a series of similar threaded holes 42' extending along its outer border to receive said thumb-screw, although any other suitable means for adjusting the index may be pro vided.

The arm 27 is pivoted at 43 upon a bracket "44, fixedupon the platen end 3, so asto be swung out of the way of the stops 26 and 30 .wherrthe machine is'to be used for other pursaid rayo'luble member-t the platen at will see,

Having thus described my invention, 1'

clann- 1. \In a type-writing maolnne,tl1e combination with a revolubleplaten and mechanism'ior advancing the platen line byline, of a stop. normally idle or ineffective during the rotation of the platen, a finger-wheel, a pawl and ratchet between the finger-wheel and platen, whereby the finger-wheel may rotate the platen in only one direction, and means controlled by said finger-wheel for enabling the platen andlinger-wheel to be arrested by said stop. j I

2. In a type-writing machine, the combination with a re voluble platen and linespaoing devices there-for, of aiinger-wheel, and a pawl and ratchet between the finger-Wheel and platen, whereby the finger-wheel may rotate the platen in one direetionfonly, and a stop for limiting the revolution of said piston by said finger-wheel, adjustable means being provided for varying, the vextent of rotation of the platen by said finger-wheel before ar-' rested by said sta 3. In a typeewriting machine, the eombi nation with a rev'oluble platen u id mechanism for advancing the platen line by line, of a stop normallyiidle or inefi'ec-tiveduring' the rotation of the plate-11,21 revolublemember normally disconnected from the platen, and a pawland ratchet mechanism for connecting during only the backward rotationof the lat tel", said revoluble member hav ng means to cooperate with said-stop to arrest only the backward revolution of the platen.

4. In a type-writing machine, the conibination with a revoluble platen and linespac-' ing devices therefor, of means; including a pawi-and-ratehet mechanism, for mechamd ally limiting the backward revolution of the platen, means ,being fovided for varying the are through which the platen may be turne'zil' back: before being arrested 5:; In a ty machine, the combi nation with a revolnble' platen and line-spec; ing" deyioe'sitherefor of a-finger-wheel, means i for enablingsaid finger-Wheel to rotate said' platen forwardly, a revoluble member," a

clutch between saidrevoluble: member and said platen or fingenwheel, saidelutch being el'lectiye only during the backward rotation of the platen, and a stopcopfiating with. said clutch member for limiting the backward rotation of the platen.

6., In a type-writing maohine, the'cornbination with a revoluble plate-n and line-spadmg devices therefor, ofa fing r-wheel, means ing devices therefor, of a revel effective only during the backward rotation of the platen, and a stop cooperatingwith said clutch member for limiting the backward rotation of the platen, means being provided for varying the relation of said step and said clutch member, so as to vary'the extent of the backward stroke of the platen.

nation with a revoluble platen and mechanism for advancing the platen line by line,.oi n'ieans normally disconnected from the platen but eonnectible thereto at will, for turning theplaten in only backwarddirection from any point to i h it may have been ad vance'd'by said Arie-spacing mechanism, and for arresting the platen after its backward rotation throng-h predetermined number of lines-paces.

l iin a type-writing machine, the combination with a revoluble platen and itchanism for advancing the platen line by line, of means normally disconnected from the platen but eennectible thereto at will, for turning the platen in only backward direction from 'anyboint whioh may have been advanced by said line-spacing mechanism, and for a1- resting the platen after its backward rotation through a predetermined number of line-- spaces; adjustable means being prov ded for enabling such backward stroke of t platen to be varied.

9-. in a type-writing machine, the eombi.

nation with a revoluble platen and l detaining said revoluble member st in a predetermined position dnrir: wan ble member.

16. ty p e-writi nation with revolt ing devices thereto clutch between ea a the platen, elem the backward rotation detaining said revoluble I in a predetermined pos ion duri g ward rotation oi'isaid plat-en and s id revolt. ble'mem ber, provision being made for effecting relative adjustment oi'said parts so as to vary the extentot' the backward strokeioithe platen and revoluble member before arrested by said step. g I 11'. In a type writing 1nachine,the elem ination with'a revoluble platen l lines as e member, forward and back stops'foi' limit] the rotathe i .l machine, the coin l lime-spadtion of said revoluble member, and a clutch rotation'o'f said platen and said revels ii b a,

7; In a type-writing machine, the combiher and effective only when the platen is turning baoluvardly.

12. In a type-writing maehine,'the combination with a revoluble platen and linespae ing= devices therefor, of a revoluble member,

' forward and back stops for limiting the rota e eeting relative adjustment of said steps so 13. In a typewriting machine, the eombi nation with a revoluble platen and line-spacin deviees therefor, of a revoluble' member, re atively adjustable stops for limiting the strokes thereof, and a pawland-ratchet mechanism between said revoluble member and said platen. v

14. In a type-writing machine, the combination with a revoluble platen and line-spacing devices therefor, of a revoluble member, relatively adjustable stops for limiting the strokes thereof, and a pawland -rat'ci'i'et mechanism between said revoluble member and said platen, and efleetlve only when theplaten. is turning baekwardly, 1,.

15. In a type-writing machine, the combi nation with a revoluble platen and line-spaning devices therefor, of a revo'luble member havi a rack, a stop adjustable upon said revolu le member and having a part to cooperate with said rack to hold the steps where adjusted, and a clutch between said revoluble member and said platen, for enabling the latter to be arrested by means of said step.

16. In a type-writing machine, the combination with a revoluble platen and line-spaeen'g devises-therefor, of a revoluble member 'hiawng a'raen, a-ste adjustable" upon said revoluble member an having a part to 006perate with said rack to hold the stops where adjusted, and a clutch between said revoluble member and said laten, for enabling thelatter to be arrested y means of said stop when theplaten is rotating baekwardly; means bein provided upon said rotating member for holding it stationary'in a predetermined position while the platen is rotating forwardly.

17. In a type-writing machine, the combination with a revoluble platen and line-spacpiglmeehanism therefor, of a' member revo e about the platen-axis, a curved rack upon said revoluble member, a stop ad ustable around. said revoluble member and-hav-x ing a tooth to engage said rack, means for holding saidtooth out of said rack, a stop lined upon said revoluble member,- and means for enabling only theba'ekward rotation of said platen to be arrested by one of said stops, and for enabling theother of said stops to hold said revoluble member. stationary during onlv the forward rotation of the platen. -'18; In a type-Writing machine, the combinatioii with a revoluble platen, of means'ineluding a member revoluble with the platen and a stop for arresting both-the platenand the' revoluble member; for determining meehanieally the extent of movement of the platen for bringing the first line on a bill or the like to the printing-point, ol" independent means for ga' 'in the top margin of a recordsheet inserter with the bill.

19. ln a type-writing machine, the combination with a-revoluble platen, of means in =elw ling a member revoluble with the platenand a stop fonarresting both the platen and therevolnbl-efimember, for determining meeha'nioally the extent of movement of the' platen for bringing the first line on a bill or the like to the printing-point, of independent means for gaging the top margin of a reeord-' sheet inserted With the bill; said gaging means including a member adjustable so as to seeurediiferent depths of margin on the record-sheet.

In a type-writing machine, the eombinationrwith a revoluble platen, and line-spacing ni'efohamsm, therefor, of a platen-frame, a niember -re'vbldble about the platen-axis and having a .raek eoneentrie with said axis, a stop adjustable about said axisand having a tooth to engage said rack, an index rigid with said step, a stop rigid upon said revoluble .member, a stop upon said platen-frame to cooperate with both said index and said stops, and a clutch between said revoluble member and said platen and effective to turn said revoluble member only during the back-- ward rotation of the platen.

21. In a type-n riting machine. the combination with a I'C'\l- Illll)l( platen, and line-spacing mechanism therefor, of a platen-frai'ne, a member revoluble about the platen-axis and having a rack concentricwith said axis, a stop adjustable about said axis and havin a tooth to engage sair lrank, an index rigid with said step, a stop rigid upon said revoluble member, a stop upon said platen-frame to eor'iperate with both said index and said platen and efl'egtive to turn said revoluble member only during the backward rotation of the platen; said index being adjustable about said. axis for securing diflerent depths ofa top margin upon the record-sheet.

a I ALLIN W. HEWITT. Witnesses: a

B, O. S'rroKnn 

